Card roll construction



March 7, 1961 J. D HOLLlNGSWORTH' 2,

CARD ROLL CONSTRUCTION Filed March 28, 1960 2 Sheets-Sheet l FIE. I.

INVENTOR: JOHN D. HOLLINGSWORTH by MW March 7, 1961 J. D. HOLLI NGSWORTH CARD ROLL CONSTRUCTION 2 Sheets-Sheet 2 Filed March 28, 1960 INVENTOR'. JOHN D. HOLLINGS WORTH ATTYS.

CARD ROLL CONSTRUCTION John D. Hollingsworth, R0. Box 516, Greenville, S.C.

Filed Mar. 28, 1960, Ser. No. 18,179 I 11 Claims. (Cl. 19--112) The present invention relates to card rolls and has particular application to the construction of the ends of the roll.

The present invention has particular utility in card rolls such as the doifer and main cylinder whose end portions are disposedly adjacent the card frame or other close fitting parts of the carding or garnetting machine. In the case of the doffer roll, the doffer shroud fitsclose- 1y adjacent the roll, and in the case of the main cylinder the arch fits closely adjacent the roll. In the conventional machines of this character the fibrous stock accumulates and builds up between the ends of the carding rolls and the close fitting parts of the machine. It is therefore necessary to periodically stop the machine and remove the stock, or the stock will build up to an extent which will reduce the speed of the machine and may even create sufficient friction to heat the stock to a temperature where it may burn. Apart from the power loss and the danger of fire, the frequent interruptions in the operation of the machine cause a substantial reduction in the production of the apparatus.

Apart from the loss in production because of down time, the presence of accumulated stock at the end of the roll adversely affects the quality of the carded product. The stock which builds up at the end of the roll overhangs the end and drags against the edge of the web being carded or garnetted. This roughens the edge of the web as it passes through the machine and makes the web edge uneven. The unevenness causes imperfections in the yarn produced from the web such as variation in the count of the yarn along its length, and neps, pills, or nubs in the yarn.

With the foregoing in mind the present invention provides means for preventing the accumulation of fibrous stock at the end of the card rolls and eliminates the several disadvantages stated above.

More specificallythe present invention provides a novel end element for the card roll which operates to discharge from the end of the roll any tufts or other accumulations of fibrous material.

All of the objects of the present invention are more fully set forth hereinafter with reference to the accompanying drawing wherein Fig. 1 illustrates a dolfer roll in a carding machine embodying the present invention;

Fig. 2 is a fragmentary sectional view taken on the line 22 of Fig. 1 showing the end of the card roll;

Fig. 3 is a modified form of end wire in accordance with the present invention;

Fig. 4 is a fragmentary sectional view illustrating the end wire of Fig. 3 in place on the roll;

Figs. 5, 7, 9 and 11 are fragmentary sectional views similar to Fig. 4 showing modified constructions in accordance with the present invention; and

Figs. 6, 8, 8a, 10 and 12 are fragmentary perspective views of the end elements shown in Figs. 5, 7, 9 and 11 respectively.

Referring now to the drawings, and more particularly 2,973,560 Patented Mar. 7, 1961 a horizontal axis on a shaft (not shown) closely adjacent the stationary dofier shroud 11, which with the doifer bonnet 12 forms an enclosure for the dolfer roll. In the present instance, the dofr'er roll 10 is clothed with metallic clothing having helically-wound surface wire 13 supported on the roll body 14 by means of castellated foundation wire 15. An end plate 16 is mounted on the body 14 of the roll and is encircled by the h-wire 17 which retains the foundation Wire 15 in place on the roll. An end wire 18 is mounted in a circumferential groove on the h-wire 17 to retain the surface wire 13 against axial displacement on the roll. The end plate 16, h-wire 17 and end wire 18 constitute the end structure 9 of the card roll.

In accordance with the invention, means is provided on the end structure 9 of the card roll adjacent the stationary structure of the machine to engage or entrain any fibrous material which might tend to accumulate between the end structure 9 of card roll and the stationary portion of the machine. In the present instance, the end wire 18 is formed with a series of recesses or notches 19 in the cylindrical surface. The'notches have bottoms disposed circumferentially on the roll, and generally radial walls 20, 2% to define axial recesses which serve to entrain any fibrous stock accumulating adjacent the end of the roll, and the tufts of stock entrained in the recesses are carried around by the roll until they are discharged away from the roll by gravity or are knocked off by the doifer comb. In the present instance, the end wire 18 has an enlarged body portion 22 outwardly of the h-wire 17 and a reduced portion 23 which is received in the peripheral groove of the h-wire. This particular construction reduces the clearance between the end wire and the stationary part of the frame so that the roll 10 presents a substantially flush end surface confronting the stationary part 11 of the machine.

The notches in the end wire need not take the precise form illustrated in Figs. 1 and 2, and the end Wire may be formed as shown at 25 in Figs. 3 and 4. The end wire 25 is of uniform thickness throughout and is provided in its outer cylindrical surface with recesses 26 defined by generally radially extending walls 27, 27 terminating in circumferentially-disposed bottoms. In the present instance the Walls 27 of adjacent notches converge to a point at the outer periphery of the end wire. In

other respects the card roll 28 illustrated in Figs. 3 and 4 Y is identical to the card roll 10 shown in Figs. 1 and 2.

A variation of end structure within the scope of the present invention is illustrated in Figs. 5 and 6 wherein the card roll 31 is provided with an h-wire 32 having radially extending recesses 33 along its exposed axial end surface. The recesses 33 provide radial walls' 34 which assist in engaging and dragging away any accumulation of stock which might become lodged between the roll 31 and the adjacent stationary part of the machine, and bottoms which are disposed in a generally radial transverse plane. The end wire 35 fitted in the groove of the h-wire 32 is provided with axially extending recesses 36 similar in form to the recesses 19 shown in Figs. 1 and 2. In this case, the end wire 35 is of uniform thickness throughout.

A further modification of the end structure is shown in Figs. 7, 8 and 8a wherein a card roll 38 is provided with an h-wire 39 having radial recesses 40 at spaced intervals about the periphery of the end surface of the h-wire. An end wire 41 is mounted in the groove of the h-wire and is provided with axial recesses 42. In this case, the end wire 41 has an enlarged exposed body portion 43 which extends axially outward to terminate flush with the end wall of the h-wire 39. Radial recesses 3 .44 are provided in the end wire to register with the recesses 40 of the h-wire so as to permit ready discharge of the stock engaged by the radial walls of the recesses 49 and 44. The axial recesses .42. in vtheencl wire 41 are of thesame general form as the recesses "19 illustrated in Figs. 1 and 2. In the embodimentshown in 'Fig. 8, the radial recesses 49, 44 are spaced widely about the circumference of the card roll and register with only selected axial recesses 42 whereas in the embodiment shown in Figs. 8a there is a radial recess 40, 44 for each axial recess 42 in the end wire 41.

' Figs. 9 and 10 show an embodiment of end structure wherein the card roll 4-6 is provided with a plain h-wire 47 similar to the h-wire 17 of Figs. 1 and 2. The cylindrical surface of the end wire 28 is provided with'axially extending recesses 49 which alternate with radially extending recesses St in the end surface. The recesses 49 and 50 each provide generally radially extending walls to engage and entrain the fibrous material which tends to'accumulate between the roll 46 and the associated stationary structure or the carding machine. The axial recesses 49 have circumferentially-disposed bottoms and the radial recesses 59 have their bottoms disposed in a generally radial transverse plane.

Figs. 11 and 12 illustrate a card roll 52 having fillet clothing 53 and an end structure consisting of a plate 54 whose outer peripheral edge 55 extends beyond the base or root of the fillet clothing 53. In this instance, the cylindrical surface of the end plate 54 is provided with axially extending recesses 56 having generally radial walls 57 to entrain and discharge the stock which may tend to accumulate between the end structure of the roll 52 and the adjacent stationary portions of the machine. The end plate 54 with the notches 56 therein therefore serves a purpose similar to the end wires of the metallic clothing.

From the foregoing it is apparent that the present invention provides a card roll construction wherein the end of the roll at its outer periphery is provided with an end structure having a series of recesses forming generally radial walls for entraining any fibrous material which may accumulate between the card roll and the associated stationary portions of the machine. It is noted that the bottoms or lowest portions of the axial recesses are substantially coextensive with the roots of the card clothing and each recess permits direct radial outward movement of the tufts or fibrous material which may accumulate therein.

Only selected embodiments of the present invention have been illustrated and described herein, and changes and modifications may be made therein and thereto within the scope of the present invention, as defined in the appended claims.

I claim:

1,. Card roll construction for carding or gar-netting machines in which the outer periphery of theend of the rotary card roll is positioned adjacent a stationary part of the machine, comprising a roll body of generally cylindrical form, card clothing mounted on the cylindrical surface of said roll body, and an end structure mounted on the end of said roll body having at least a portion projecting beyond the periphery of said roll body and confining the card clothing thereon, said projecting portion of the end structure having generally radial walls therein defining recesses for engaging and entraining fibrous material which may accumulatebetween said rolland the stationary ,partof the machine adjacent the periphery of the end structure of the end roll.

2. Card roll construction according to claim 1 where in the recesses in said end structure include bottoms disposed circumferentially of said roll and extend'axially therethrongh to define axial recesses.

3. Card roll construction according to claim 2 wherein the card clothing consists of a plurality of points projecting substantially radially from the root of the clothing, the bottoms of said axial recesses being coextensive with the roots of the card clothing.

4. Card roll construction according to claim 2 including additional substantially radial walls, and bottoms disposed in a generally radial transverse plane, said additional walls and bottoms defining radially extending recesses in the periphery of said end structure.

5. Card roll construction according to claim 4 wherein said radial recesses are disposed in spaced relation about the periphery of said end element in registry with selected axial recesses.

6. Card roll construction according to claim 4 wherein a radial recess is disposed in registry with each axial recess of the end element.

7. Card roll construction according to claim 5 wherein said radial recesses are positioned intermediate said axial recesses, said radial and axial recesses alternating about the periphery of said end element.

8. Card roll construction according to claim 1 wherein the recesses in said end structure include bottoms disposed in a generally radial transverse plane to define radial recesses.

9. Card roll construction according to claim 1 wherein said end structure provides a flat end surface on said roll.

-10. Card roll construction according to claim 1 wherein said card clothing is metallic clothing, and said end structure comprises an h-wire mounted on said roll body and an end wire mounted in said h-Wire.

11. Card roll construction according to claim 1 wherein said card clothing is fillet clothing and said end structure comprises an end plate for said roll.

References Cited in the file of this patent UNITED STATES PATENTS 2,842,802 Hollingsworth July 15, 1958 same-4.

UNITED STATES PATENT OFFICE CERTIFICATIGN OF CORRECTION Patent N09, 2 973 56O March 7, 1961 John D. Hollingsworth It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 4,, line 34, for the claim reference numeral "5" read 4 Signed and sealed this 29th day of August 19610 SEA L) Attest:

ERNEST W. SWIDER Attesting Officer DAVID L. LADD Commissioner of Patents 

